
The breeds · working
AKC Foundation Stock Service · UKC Guardian · FCI standard 91
Spanish Mastiff.
Flock and property guardian against wolf. FCI 91 utilization: guard and defense; closely tied to the seasonal moving of livestock, especially the Merino flocks he accompanied in the time of the Mesta (the medieval association of wandering-herd owners), defending them from wolves and other predators on the road between pastures and on the grazing grounds in all seasons; today accompanies numerous herds, sedentary and wandering, and guards farms, people and property. UKC: long used to guard Merino livestock as they are moved between pastures; in ancient times often went with the flock without a shepherd; today also a protector of farm and family; determined and sure of himself protecting flocks from dangerous predators.
Breed sets the odds. The parents set the dog. Every number here shows its source, its spread and how sure we are. Nothing on this page is a prediction about one dog.
The body
What the breed is built like. Registry standards give an ideal, not a range.
Height at the shoulder
Low and high span FCI, UKC and the AKC page band; minimums only, center blank. The AKC band is breed-wide.
Weight
Only the AKC page gives a weight; one breed-wide band counted in both rows, though females run lighter in most mastiffs and no source here splits it.
Coat
Shedding
AKC breed page trait score, 1 to 5: a breed-club tendency, never a measurement.
Heat tolerance
Derived from the coat description in the standard (confidence derived). 3 = medium coat; neither standard says whether an undercoat is present.
The dog at home
What the breed asks of a day. The first thing most homes get wrong.
Exercise need
exercise_need_min omitted: no RKC page.
Energy
AKC breed page trait score, 1 to 5: a breed-club tendency, never a measurement.
Grooming load
1 = wipe-down; AKC band 1 of 5 mapped directly. FCI and UKC both fault a wavy, curly or excessively long coat. Single source for the band.
The work
What it was built to do in the field, and what a test or trial asks of it.
Role
Wolf is named by FCI; UKC says dangerous predators. FCI classes the breed 'without working trial'.
Also used on
Search pattern
No source describes patrol pattern or number of dogs per flock.
More
akc bands
Fourteen AKC bands in one row; the selector reads each by name. Breed-club ratings: a tendency, never a measurement.
How to read this page
Every value carries a label. Measured means peer-reviewed data on many dogs. Studied means peer-reviewed, smaller or indirect. Breed club means a club or registry states it. Editorial means expert opinion with no measurement behind it. Where two good sources disagree, both are shown and neither is averaged.
Published when the entry rests on the best information available from no fewer than three independent sources, checked by a second pass that did not write it. 2 sources on this page. Found something wrong? Tell us and the correction is logged with its date.
- Also called
- Mastín Español, Mastín Español
Every breed, read the same way.
The breed index grows as entries clear the standard. Gun dogs first.
All published breedsYour spanish mastiff, on the record.
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